ChrisW
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| posted on 9/5/12 at 12:12 PM |
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Brake ideas for my Scooter
Sorry everyone, more scooter related questions!
For those that don't know the story so far it's a mobility scooter chassis with 110cc pit bike engine running a rear axle from a kart.
I'm trying to work out what to do about brakes. A kart brake caliper would be the obvious solution, but they're designed to work off a
pedal whereas I want motorbike-style handlebar brakes. Now I guess I could use a motorbike hydraulic lever, but I can't find any information on
master cylinder sizes and have no idea whether this would produce a sensible amount of braking effort.
So then I looked at motorbike calipers, but it seems bike discs are thinner than the 12mm that I have on the kart axle, so I'd have to adapt a
motorbike disc to fit the kart carrier. Sounds like a nightmare.
Does anyone have any pointers or bright ideas?
Thanks, Chris
My gaff my rules
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nige
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| posted on 9/5/12 at 01:40 PM |
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what about pit bike or small 50cc scooter brakes
are they too big ?
when you start this journey
you think it will be done in " no " time but then " no " turns into a " bloody " long time
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ChrisW
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| posted on 9/5/12 at 02:01 PM |
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They won't take the 12mm thick disc, so I'd have to try to fit a thinner disc to the kart axle carrier.
Chris
My gaff my rules
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v8kid
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| posted on 9/5/12 at 02:19 PM |
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It's quite cheap to get discs turned down I got a pair reduced to 10mm, drilled and the pcd altered for £30. Apparantly most time is spent
setting them up on the lathe and thats where the cost is.
Cheers
You'd be surprised how quickly the sales people at B&Q try and assist you after ignoring you for the past 15 minutes when you try and start a
chainsaw
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designer
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| posted on 9/5/12 at 02:22 PM |
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Don't some mountain bikes have hand operated disc brakes?
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ChrisW
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| posted on 9/5/12 at 02:28 PM |
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quote:
Originally posted by v8kid
It's quite cheap to get discs turned down I got a pair reduced to 10mm, drilled and the pcd altered for £30. Apparantly most time is spent
setting them up on the lathe and thats where the cost is.
The problem with doing that is that it's a vented disc, so if you turned it down to 6-7mm you'd be left with the space in the middle!
As for mountain bike brakes, I suspect the same problem. That's if they were even man enough for the job which I doubt!
Chris
My gaff my rules
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maccmike
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| posted on 9/5/12 at 02:40 PM |
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I use a front brake caliper off a pit bike. Disc is a gsxr1100. Cool thing is as its a mechanical cable operated caliper, Iv spaced it and used longer
bolts to accommodate thicker disc. Cost me about 12quid off ebay.
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ChrisW
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| posted on 9/5/12 at 02:40 PM |
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quote:
Originally posted by maccmike
I use a front brake caliper off a pit bike. Disc is a gsxr1100. Cool thing is as its a mechanical cable operated caliper, Iv spaced it and used longer
bolts to accommodate thicker disc. Cost me about 12quid off ebay.
Sounds interesting! Any chance of a photo?
Chris
My gaff my rules
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JAG
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| posted on 9/5/12 at 02:41 PM |
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How heavy will the whole thing be with you onboard?
How many discs will be on the vehicle?
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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JAG
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| posted on 9/5/12 at 02:41 PM |
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ooops double post 
[Edited on 9/5/12 by JAG]
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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Chippy
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| posted on 9/5/12 at 02:43 PM |
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Aren't all callipers made in two parts, and if so can't you just make up a spacer plate to make the calliper fit the disc, seems like a
plan, :-) Cheers Ray
Must type faster. Ho Hum!
[Edited on 9-5-12 by Chippy]
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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Fred W B
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| posted on 9/5/12 at 03:25 PM |
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Older karts used cable operated brake calipers
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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nick205
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| posted on 9/5/12 at 03:29 PM |
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Just rub your shoe on the wheel to slow down - that's what the kids round here do after they've removed the brakes from their BMX bikes 
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ChrisW
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| posted on 9/5/12 at 03:48 PM |
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I'd guess it's going to be the best part of 150kg with my fat arse on board. There's a single disc on the rear axle.
Chris
My gaff my rules
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Dangle_kt
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| posted on 9/5/12 at 05:49 PM |
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Mini Moto caliper, cheap, cable operated, same lever as a push bike too
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ChrisW
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| posted on 9/5/12 at 08:26 PM |
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quote:
Originally posted by Dangle_kt
Mini Moto caliper, cheap, cable operated, same lever as a push bike too
Can they be spaced out to fit the kart disc?
Chris
My gaff my rules
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